On 10/09/2018 01:02 PM, Johannes Berg wrote: > On Tue, 2018-10-09 at 20:01 +0000, Adham.Abozaeid@xxxxxxxxxxxxx wrote: >> >> Do you mean that it can also be used for probing specific networks even if they are broadcasting their SSID? > > Yes. > >> I think this might be a possible case if the user is trying to limit the scan results to a specific network. > > No. Don't do any filtering based on this. > > Basically the only thing you should do with the (list of) SSIDs is to > send a probe request containing each of them. Userspace/cfg80211 will > take care that the usual empty (wildcard) SSID is included in the list, > so don't send one with that by yourself, just iterate the list. > > If you only support sending one probe request in each scan request, then > set the max # of SSIDs supported to 1, otherwise set it to the maximum > (or a reasonable limit like 20 if it's in software). > > johannes > Thanks Johannes. It's clear now.